enforce txhistory limit

lib/errors/errordefinitions.js

@@ -17,6 +17,7 @@ var errors = {
   INVALID_ADDRESS: 'Invalid address',
   KEY_IN_COPAYER: 'Key already registered',
   LOCKED_FUNDS: 'Funds are locked by pending transaction proposals',
+  HISTORY_LIMIT_EXCEEDED: 'Requested page limit is above allowed maximum',
   MAIN_ADDRESS_GAP_REACHED: 'Maximum number of consecutive addresses without activity reached',
   NOT_AUTHORIZED: 'Not authorized',
   TOO_MANY_KEYS: 'Too many keys registered',

lib/server.js

@@ -1975,7 +1975,8 @@ WalletService.prototype.getTxHistory = function(opts, cb) {
 
   opts = opts || {};
   opts.limit =  (_.isUndefined(opts.limit) ? HISTORY_LIMIT : opts.limit);
-  if (opts.limit > HISTORY_LIMIT) opts.limit = HISTORY_LIMIT;
+  if (opts.limit > HISTORY_LIMIT)
+    return cb(Errors.HISTORY_LIMIT_EXCEEDED);
 
   function decorate(txs, addresses, proposals) {
 

test/integration/server.js

@@ -4415,7 +4415,7 @@ describe('Wallet service', function() {
       }, {
         opts: {
           skip: 4,
-          limit: 20,
+          limit: 10,
         },
         expected: [10],
       }, {
@@ -4479,6 +4479,13 @@ describe('Wallet service', function() {
         done();
       });
     });
+    it('should handle exceeded limit', function(done) {
+      server.getTxHistory({limit:1000}, function(err, txs) {
+        err.code.should.equal('HISTORY_LIMIT_EXCEEDED');
+        done();
+      });
+    });
+ 
   });
 
   describe('#scan', function() {